Drilling Engineering

Themes

Geology, Petrophysics & Geophysics

This task is based on the Epos®, SKUA®, Geolog® and StratEarth® software suites of Pardigm company, a G&G software solution provider. The capability of today’s advanced geological interpretation and modelling software is generally defined by following distinct functionalities:

Software suites

The efficient and thorough processing and interpretation of borehole measurements for optimal formation evaluation, thereby gaining maximum information from well data.

Interpreted well sections will be constructed from wireline logs that carry the data information needed to perform stratigraphic correlation, while seismic data may also be incorporated at this stage. Net thickness maps are then constructed by the software automatically while markers are interpreted and geologic zones of research interest identified. Based on the strati-graphic column, as well as interpreted faults, a G&G planning and interpretation software suite willl construct structural 3D models automatically.

With the help of advanced modelling tools, guided by geological constraints, structural and stratigraphic tool and models will be generated, which will show the capacity to handle any amount of complex faults, under the avoidance of simplifications.

By applying a dynamic uncertainty workflow, the user can construct at the basis of this a reservoir property model by first performing a facies distribution per each layer, using a complete set of categorical simulation algorithms. For each facia all petrophysical parameters needed will be populated using kriging or simulation methods.

Application of multiple geostatistical methods in order to assess and mitigate data uncertainties.

Uncertainty in geology and geophysics is not only present in the algorithm that the modeller chooses to apply, it is also present in all the parameters and the data used in those algorithms. Uncertainty about correlation coefficients, variogram range, or with porosity distribution means that all may be modelling input and must be analyzed for sensitivity. When dealing with uncertainty, the most important factor is to know which parameters are behind it, so that the workflow can be optimized and steps can be taken to reduce this uncertainty.

Creation of a reservoir model; from static to dynamic upgrade of the 3D geologic model.

The ultimate output result from a G&G software is the mathematical transform from static to dynamic.The 3D model should be able to be discretized to automatically construct a flow simulation grid, where all necessary faults are taken into account and all cell geometries are optimized for high performance flow simulation. The patented UVT transform® assures the spatial integrity of the up scaling between the fine scale geologic grid and the coarser flow simulation grid. As the final step the reservoir flow simulation grid can be constructed in any geological setting for reservoir simulation and history matching.